Insulating Concrete
INSULATING CONCRETE — THERMAL PERFORMANCE
Insulating concrete is ultra-lightweight (20-50 PCF) cellular concrete designed primarily for thermal insulation rather than structural load-bearing. Used as roof deck insulation (slope-to-drain systems), floor fill insulation, pipe bury insulation, and radiant floor underlayment. Provides continuous insulation without joints or seams, is fire-resistant (noncombustible), and can achieve R-values up to R-3.5 per inch at lowest densities.
Key Highlights
Thermal insulation
R-values up to R-3.5 per inch at lowest densities.
Roof deck systems
lightweight insulating concrete over metal deck for slope-to-drain roofing.
Fire resistance
noncombustible cellular concrete provides fire-rated assemblies.
Why Choose Our Insulating Concrete
Insulating concrete provides continuous, seamless thermal insulation using ultra-lightweight cellular concrete (20-50 PCF). Most commonly used in roof deck insulation systems where it creates a slope-to-drain surface over structural metal deck. The noncombustible, seamless insulation layer eliminates thermal bridging and provides built-in fire resistance.
Signs You Need Insulating Concrete
1. Roof insulation or slope-to-drain
Your flat roof needs insulation and/or positive drainage slope — insulating concrete provides both in one application.
Our Process
Step 1 — Design
Calculate required thickness, density, and R-value based on energy code requirements.
Step 2 — Production
Produce ultra-lightweight cellular concrete at specified density on-site.
Step 3 — Placement
Pump onto roof deck, screed to designed slope pattern, and allow to cure.
Brands & Materials
- Aerix Industries
- Sika Sarnafil roof systems
- Cemstone specialty mixes
FAQs About Insulating Concrete
What R-value does insulating concrete provide?
R-value depends on density: 20 PCF provides approximately R-3.5 per inch, 30 PCF provides R-2.5 per inch, and 50 PCF provides R-1.5 per inch. Multiple inches are typically applied to achieve the required total R-value for the roof assembly.
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When you choose Legacy General Services for your concrete project in the NW Metro, you're choosing a partner committed to quality that lasts.
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MN-registered contractor since 2023. Insured and trusted by homeowners across the NW Metro.
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No hidden fees or surprise charges. Upfront pricing on every concrete project—big or small, start to finish.
Efficiency
On-time scheduling and reliable project timelines. We show up when we say we will and finish on schedule.
Quality
Air-entrained, freeze-thaw resistant concrete built for Minnesota winters. Every pour meets or exceeds code.